fmul-exp.ll
3.4 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -S -instcombine < %s | FileCheck %s
declare double @llvm.exp.f64(double) nounwind readnone speculatable
declare void @use(double)
; exp(a) * exp(b) no reassoc flags
define double @exp_a_exp_b(double %a, double %b) {
; CHECK-LABEL: @exp_a_exp_b(
; CHECK-NEXT: [[TMP:%.*]] = call double @llvm.exp.f64(double [[A:%.*]])
; CHECK-NEXT: [[TMP1:%.*]] = call double @llvm.exp.f64(double [[B:%.*]])
; CHECK-NEXT: [[MUL:%.*]] = fmul double [[TMP]], [[TMP1]]
; CHECK-NEXT: ret double [[MUL]]
;
%tmp = call double @llvm.exp.f64(double %a)
%tmp1 = call double @llvm.exp.f64(double %b)
%mul = fmul double %tmp, %tmp1
ret double %mul
}
; exp(a) * exp(b) reassoc, multiple uses
define double @exp_a_exp_b_multiple_uses(double %a, double %b) {
; CHECK-LABEL: @exp_a_exp_b_multiple_uses(
; CHECK-NEXT: [[TMP1:%.*]] = call double @llvm.exp.f64(double [[B:%.*]])
; CHECK-NEXT: [[TMP:%.*]] = fadd reassoc double [[A:%.*]], [[B]]
; CHECK-NEXT: [[TMP2:%.*]] = call reassoc double @llvm.exp.f64(double [[TMP]])
; CHECK-NEXT: call void @use(double [[TMP1]])
; CHECK-NEXT: ret double [[TMP2]]
;
%tmp = call double @llvm.exp.f64(double %a)
%tmp1 = call double @llvm.exp.f64(double %b)
%mul = fmul reassoc double %tmp, %tmp1
call void @use(double %tmp1)
ret double %mul
}
; exp(a) * exp(b) reassoc, both with multiple uses
define double @exp_a_exp_b_multiple_uses_both(double %a, double %b) {
; CHECK-LABEL: @exp_a_exp_b_multiple_uses_both(
; CHECK-NEXT: [[TMP:%.*]] = call double @llvm.exp.f64(double [[A:%.*]])
; CHECK-NEXT: [[TMP1:%.*]] = call double @llvm.exp.f64(double [[B:%.*]])
; CHECK-NEXT: [[MUL:%.*]] = fmul reassoc double [[TMP]], [[TMP1]]
; CHECK-NEXT: call void @use(double [[TMP]])
; CHECK-NEXT: call void @use(double [[TMP1]])
; CHECK-NEXT: ret double [[MUL]]
;
%tmp = call double @llvm.exp.f64(double %a)
%tmp1 = call double @llvm.exp.f64(double %b)
%mul = fmul reassoc double %tmp, %tmp1
call void @use(double %tmp)
call void @use(double %tmp1)
ret double %mul
}
; exp(a) * exp(b) => exp(a+b) with reassoc
define double @exp_a_exp_b_reassoc(double %a, double %b) {
; CHECK-LABEL: @exp_a_exp_b_reassoc(
; CHECK-NEXT: [[TMP:%.*]] = fadd reassoc double [[A:%.*]], [[B:%.*]]
; CHECK-NEXT: [[TMP1:%.*]] = call reassoc double @llvm.exp.f64(double [[TMP]])
; CHECK-NEXT: ret double [[TMP1]]
;
%tmp = call double @llvm.exp.f64(double %a)
%tmp1 = call double @llvm.exp.f64(double %b)
%mul = fmul reassoc double %tmp, %tmp1
ret double %mul
}
; exp(a) * exp(b) * exp(c) * exp(d) => exp(a+b+c+d) with reassoc
define double @exp_a_exp_b_exp_c_exp_d_fast(double %a, double %b, double %c, double %d) {
; CHECK-LABEL: @exp_a_exp_b_exp_c_exp_d_fast(
; CHECK-NEXT: [[TMP:%.*]] = fadd reassoc double [[A:%.*]], [[B:%.*]]
; CHECK-NEXT: [[TMP1:%.*]] = fadd reassoc double [[TMP]], [[C:%.*]]
; CHECK-NEXT: [[TMP2:%.*]] = fadd reassoc double [[TMP1]], [[D:%.*]]
; CHECK-NEXT: [[TMP3:%.*]] = call reassoc double @llvm.exp.f64(double [[TMP2]])
; CHECK-NEXT: ret double [[TMP3]]
;
%tmp = call double @llvm.exp.f64(double %a)
%tmp1 = call double @llvm.exp.f64(double %b)
%mul = fmul reassoc double %tmp, %tmp1
%tmp2 = call double @llvm.exp.f64(double %c)
%mul1 = fmul reassoc double %mul, %tmp2
%tmp3 = call double @llvm.exp.f64(double %d)
%mul2 = fmul reassoc double %mul1, %tmp3
ret double %mul2
}